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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*<em class="jxr_comment">-</em></em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright (c) 2009-2010, Oleg Estekhin</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> * All rights reserved.</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * Redistribution and use in source and binary forms, with or without</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * modification, are permitted provided that the following conditions are met:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *  * Redistributions of source code must retain the above copyright notice,</em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *    this list of conditions and the following disclaimer.</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> *  * Redistributions in binary form must reproduce the above copyright</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> *    notice, this list of conditions and the following disclaimer in</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> *    the documentation and/or other materials provided with the distribution.</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> *  * Neither the names of the copyright holders nor the names of their</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> *    contributors may be used to endorse or promote products derived</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> *    from this software without specific prior written permission.</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="17" href="#17">17</a>  <em class="jxr_comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</em>
<a class="jxr_linenumber" name="18" href="#18">18</a>  <em class="jxr_comment"> * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</em>
<a class="jxr_linenumber" name="19" href="#19">19</a>  <em class="jxr_comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</em>
<a class="jxr_linenumber" name="20" href="#20">20</a>  <em class="jxr_comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR</em>
<a class="jxr_linenumber" name="21" href="#21">21</a>  <em class="jxr_comment"> * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</em>
<a class="jxr_linenumber" name="22" href="#22">22</a>  <em class="jxr_comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR</em>
<a class="jxr_linenumber" name="23" href="#23">23</a>  <em class="jxr_comment"> * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</em>
<a class="jxr_linenumber" name="24" href="#24">24</a>  <em class="jxr_comment"> * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</em>
<a class="jxr_linenumber" name="25" href="#25">25</a>  <em class="jxr_comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY</em>
<a class="jxr_linenumber" name="26" href="#26">26</a>  <em class="jxr_comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH</em>
<a class="jxr_linenumber" name="27" href="#27">27</a>  <em class="jxr_comment"> * DAMAGE.</em>
<a class="jxr_linenumber" name="28" href="#28">28</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="29" href="#29">29</a>  
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">package</strong> oe.math.complex;
<a class="jxr_linenumber" name="31" href="#31">31</a>  
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.text.DecimalFormat;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.text.DecimalFormatSymbols;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.text.FieldPosition;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.text.Format;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.text.ParseException;
<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.text.ParsePosition;
<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.util.Locale;
<a class="jxr_linenumber" name="39" href="#39">39</a>  
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Provides parsing and formatting of complex numbers. */</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../oe/math/complex/ComplexFormat.html">ComplexFormat</a> <strong class="jxr_keyword">extends</strong> Format {
<a class="jxr_linenumber" name="42" href="#42">42</a>  
<a class="jxr_linenumber" name="43" href="#43">43</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String PLUS = <span class="jxr_string">"+"</span>;
<a class="jxr_linenumber" name="44" href="#44">44</a>  
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MINUS = <span class="jxr_string">"-"</span>;
<a class="jxr_linenumber" name="46" href="#46">46</a>  
<a class="jxr_linenumber" name="47" href="#47">47</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String INFINITY = <span class="jxr_string">"\u221E"</span>; <em class="jxr_comment">// ∞</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  
<a class="jxr_linenumber" name="49" href="#49">49</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String NaN = <span class="jxr_string">"\uFFFD"</span>; <em class="jxr_comment">// �</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  
<a class="jxr_linenumber" name="51" href="#51">51</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String IMAGINARY = <span class="jxr_string">"i"</span>;
<a class="jxr_linenumber" name="52" href="#52">52</a>  
<a class="jxr_linenumber" name="53" href="#53">53</a>  
<a class="jxr_linenumber" name="54" href="#54">54</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment">     * Formats a double value and appends the resulting text to a given string buffer.</em>
<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment">     * &lt;p/&gt;</em>
<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment">     * This method converts a double value to a string using the {@link Double#toString(double)} except that infinite</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     * values are represented by the characters {@code \u221E} (∞) and NaN is represented by the characters {@code</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     * \uFFFD} (�).</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">     * @param value the double value to format</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     * @param toAppendTo the buffer to append the formatted text to</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * @return the string buffer passed in as {@code toAppendTo}, with formatted text appended</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     * @see Double#toString(double)</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>      <strong class="jxr_keyword">static</strong> StringBuffer formatDouble( <strong class="jxr_keyword">double</strong> value, StringBuffer toAppendTo ) {
<a class="jxr_linenumber" name="69" href="#69">69</a>          <strong class="jxr_keyword">if</strong> ( value == Double.POSITIVE_INFINITY ) {
<a class="jxr_linenumber" name="70" href="#70">70</a>              toAppendTo.append( INFINITY );
<a class="jxr_linenumber" name="71" href="#71">71</a>          } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> ( value == Double.NEGATIVE_INFINITY ) {
<a class="jxr_linenumber" name="72" href="#72">72</a>              toAppendTo.append( MINUS ).append( INFINITY );
<a class="jxr_linenumber" name="73" href="#73">73</a>          } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> ( value != value ) {
<a class="jxr_linenumber" name="74" href="#74">74</a>              toAppendTo.append( NaN );
<a class="jxr_linenumber" name="75" href="#75">75</a>          } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="76" href="#76">76</a>              toAppendTo.append( value );
<a class="jxr_linenumber" name="77" href="#77">77</a>          }
<a class="jxr_linenumber" name="78" href="#78">78</a>          <strong class="jxr_keyword">return</strong> toAppendTo;
<a class="jxr_linenumber" name="79" href="#79">79</a>      }
<a class="jxr_linenumber" name="80" href="#80">80</a>  
<a class="jxr_linenumber" name="81" href="#81">81</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">     * Formats a complex value and appends the resulting text to a given string buffer.</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">     * @param complex the complex value to format</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">     * @param toAppendTo the buffer to append the formatted text to</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * @return the string buffer passed in as {@code toAppendTo}, with formatted text appended</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * @see #formatDouble(double, StringBuffer)</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>      <strong class="jxr_keyword">static</strong> StringBuffer formatComplex( Complex complex, StringBuffer toAppendTo ) {
<a class="jxr_linenumber" name="92" href="#92">92</a>          <strong class="jxr_keyword">if</strong> ( complex.hasRealPart() ) {
<a class="jxr_linenumber" name="93" href="#93">93</a>              <strong class="jxr_keyword">double</strong> re = complex.getRe();
<a class="jxr_linenumber" name="94" href="#94">94</a>              formatDouble( re, toAppendTo );
<a class="jxr_linenumber" name="95" href="#95">95</a>          }
<a class="jxr_linenumber" name="96" href="#96">96</a>          <strong class="jxr_keyword">if</strong> ( complex.hasImaginaryPart() ) {
<a class="jxr_linenumber" name="97" href="#97">97</a>              <strong class="jxr_keyword">double</strong> im = complex.getIm();
<a class="jxr_linenumber" name="98" href="#98">98</a>              <strong class="jxr_keyword">if</strong> ( complex.hasRealPart() &amp;&amp; Double.compare( im, 0.0 ) &gt;= 0 ) {
<a class="jxr_linenumber" name="99" href="#99">99</a>                  toAppendTo.append( PLUS );
<a class="jxr_linenumber" name="100" href="#100">100</a>             }
<a class="jxr_linenumber" name="101" href="#101">101</a>             formatDouble( im, toAppendTo );
<a class="jxr_linenumber" name="102" href="#102">102</a>             toAppendTo.append( IMAGINARY );
<a class="jxr_linenumber" name="103" href="#103">103</a>         }
<a class="jxr_linenumber" name="104" href="#104">104</a>         <strong class="jxr_keyword">return</strong> toAppendTo;
<a class="jxr_linenumber" name="105" href="#105">105</a>     }
<a class="jxr_linenumber" name="106" href="#106">106</a> 
<a class="jxr_linenumber" name="107" href="#107">107</a>     <strong class="jxr_keyword">static</strong> String complexToString( Complex complex ) {
<a class="jxr_linenumber" name="108" href="#108">108</a>         StringBuffer buffer = <strong class="jxr_keyword">new</strong> StringBuffer();
<a class="jxr_linenumber" name="109" href="#109">109</a>         formatComplex( complex, buffer );
<a class="jxr_linenumber" name="110" href="#110">110</a>         <strong class="jxr_keyword">return</strong> buffer.toString();
<a class="jxr_linenumber" name="111" href="#111">111</a>     }
<a class="jxr_linenumber" name="112" href="#112">112</a> 
<a class="jxr_linenumber" name="113" href="#113">113</a>     <strong class="jxr_keyword">static</strong> <a href="../../../oe/math/complex/Complex.html">Complex</a> stringToComplex( String source ) {
<a class="jxr_linenumber" name="114" href="#114">114</a>         source = source.trim();
<a class="jxr_linenumber" name="115" href="#115">115</a>         <a href="../../../oe/math/complex/ComplexFormat.html">ComplexFormat</a> complexFormat = <strong class="jxr_keyword">new</strong> <a href="../../../oe/math/complex/ComplexFormat.html">ComplexFormat</a>();
<a class="jxr_linenumber" name="116" href="#116">116</a>         ParsePosition pos = <strong class="jxr_keyword">new</strong> ParsePosition( 0 );
<a class="jxr_linenumber" name="117" href="#117">117</a>         <a href="../../../oe/math/complex/Complex.html">Complex</a> complex = complexFormat.parse( source, pos );
<a class="jxr_linenumber" name="118" href="#118">118</a>         <strong class="jxr_keyword">if</strong> ( complex == <strong class="jxr_keyword">null</strong> || pos.getIndex() &lt; source.length() ) {
<a class="jxr_linenumber" name="119" href="#119">119</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NumberFormatException( <span class="jxr_string">"the source string does not contain a parsable complex"</span> );
<a class="jxr_linenumber" name="120" href="#120">120</a>         }
<a class="jxr_linenumber" name="121" href="#121">121</a>         <strong class="jxr_keyword">return</strong> complex;
<a class="jxr_linenumber" name="122" href="#122">122</a>     }
<a class="jxr_linenumber" name="123" href="#123">123</a> 
<a class="jxr_linenumber" name="124" href="#124">124</a> 
<a class="jxr_linenumber" name="125" href="#125">125</a>     <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> The number format used to parse double values from strings. */</em>
<a class="jxr_linenumber" name="126" href="#126">126</a>     <strong class="jxr_keyword">private</strong> DecimalFormat numberFormat;
<a class="jxr_linenumber" name="127" href="#127">127</a> 
<a class="jxr_linenumber" name="128" href="#128">128</a>     <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Indicates whether {@code parse} methods stop parsing after obtaining either the real or imaginary part. */</em>
<a class="jxr_linenumber" name="129" href="#129">129</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> parsePartial;
<a class="jxr_linenumber" name="130" href="#130">130</a> 
<a class="jxr_linenumber" name="131" href="#131">131</a> 
<a class="jxr_linenumber" name="132" href="#132">132</a>     <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Creates a new {@code ComplexFormat} object. */</em>
<a class="jxr_linenumber" name="133" href="#133">133</a>     <strong class="jxr_keyword">public</strong> <a href="../../../oe/math/complex/ComplexFormat.html">ComplexFormat</a>() {
<a class="jxr_linenumber" name="134" href="#134">134</a>         DecimalFormatSymbols decimalFormatSymbols = <strong class="jxr_keyword">new</strong> DecimalFormatSymbols( Locale.ENGLISH );
<a class="jxr_linenumber" name="135" href="#135">135</a>         decimalFormatSymbols.setDecimalSeparator( '.' );
<a class="jxr_linenumber" name="136" href="#136">136</a>         decimalFormatSymbols.setInfinity( INFINITY );
<a class="jxr_linenumber" name="137" href="#137">137</a>         decimalFormatSymbols.setNaN( NaN );
<a class="jxr_linenumber" name="138" href="#138">138</a>         decimalFormatSymbols.setMinusSign( MINUS.charAt( 0 ) );
<a class="jxr_linenumber" name="139" href="#139">139</a>         numberFormat = <strong class="jxr_keyword">new</strong> DecimalFormat( <span class="jxr_string">"#0.#"</span>, decimalFormatSymbols );
<a class="jxr_linenumber" name="140" href="#140">140</a>         numberFormat.setGroupingUsed( false );
<a class="jxr_linenumber" name="141" href="#141">141</a>     }
<a class="jxr_linenumber" name="142" href="#142">142</a> 
<a class="jxr_linenumber" name="143" href="#143">143</a> 
<a class="jxr_linenumber" name="144" href="#144">144</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">     * Returns whether {@code parse} methods will stop parsing after obtaining either the real or imaginary part.</em>
<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment">     * &lt;p/&gt;</em>
<a class="jxr_linenumber" name="147" href="#147">147</a> <em class="jxr_javadoccomment">     * The default value is {@code false}.</em>
<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_javadoccomment">     * @return {@code true} if parsing will stop after obtaining either the real or imaginary part; {@code false} if</em>
<a class="jxr_linenumber" name="150" href="#150">150</a> <em class="jxr_javadoccomment">     *         {@code parse} methods will attempt to parse the imaginary part after obtaining the real part</em>
<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment">     * @see #setParsePartial(boolean)</em>
<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="154" href="#154">154</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isParsePartial() {
<a class="jxr_linenumber" name="155" href="#155">155</a>         <strong class="jxr_keyword">return</strong> parsePartial;
<a class="jxr_linenumber" name="156" href="#156">156</a>     }
<a class="jxr_linenumber" name="157" href="#157">157</a> 
<a class="jxr_linenumber" name="158" href="#158">158</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="159" href="#159">159</a> <em class="jxr_javadoccomment">     * Sets whether {@code parse} methods should stop parsing after obtaining either the real or imaginary part.</em>
<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_javadoccomment">     * @param parsePartial if {@code true} then parsing will stop after obtaining either the real or imaginary part; if</em>
<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">     * {@code false} then {@code parse} methods will attempt to parse the imaginary part after obtaining the real part</em>
<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">     * @see #isParsePartial()</em>
<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="166" href="#166">166</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setParsePartial( <strong class="jxr_keyword">boolean</strong> parsePartial ) {
<a class="jxr_linenumber" name="167" href="#167">167</a>         <strong class="jxr_keyword">this</strong>.parsePartial = parsePartial;
<a class="jxr_linenumber" name="168" href="#168">168</a>     }
<a class="jxr_linenumber" name="169" href="#169">169</a> 
<a class="jxr_linenumber" name="170" href="#170">170</a> 
<a class="jxr_linenumber" name="171" href="#171">171</a>     @Override
<a class="jxr_linenumber" name="172" href="#172">172</a>     <strong class="jxr_keyword">public</strong> StringBuffer format( Object object, StringBuffer toAppendTo, FieldPosition pos ) {
<a class="jxr_linenumber" name="173" href="#173">173</a>         <strong class="jxr_keyword">if</strong> ( object instanceof Complex ) {
<a class="jxr_linenumber" name="174" href="#174">174</a>             <strong class="jxr_keyword">return</strong> format( ( Complex ) object, toAppendTo, pos );
<a class="jxr_linenumber" name="175" href="#175">175</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="176" href="#176">176</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( <span class="jxr_string">"object is not an instance of Complex"</span> );
<a class="jxr_linenumber" name="177" href="#177">177</a>         }
<a class="jxr_linenumber" name="178" href="#178">178</a>     }
<a class="jxr_linenumber" name="179" href="#179">179</a> 
<a class="jxr_linenumber" name="180" href="#180">180</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment">     * Formats a complex value and appends the resulting text to a given string buffer.</em>
<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_javadoccomment">     * @param complex the complex value to format</em>
<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment">     * @param toAppendTo the buffer to append the formatted text to</em>
<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment">     * @param pos ignored</em>
<a class="jxr_linenumber" name="186" href="#186">186</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="187" href="#187">187</a> <em class="jxr_javadoccomment">     * @return the string buffer passed in as {@code toAppendTo}, with formatted text appended</em>
<a class="jxr_linenumber" name="188" href="#188">188</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if {@code complex} is {@code null}</em>
<a class="jxr_linenumber" name="190" href="#190">190</a> <em class="jxr_javadoccomment">     * @throws NullPointerException if {@code toAppendTo} or {@code pos} is {@code null}</em>
<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="192" href="#192">192</a>     <strong class="jxr_keyword">public</strong> StringBuffer format( Complex complex, StringBuffer toAppendTo, FieldPosition pos ) {
<a class="jxr_linenumber" name="193" href="#193">193</a>         <strong class="jxr_keyword">if</strong> ( complex == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="194" href="#194">194</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( <span class="jxr_string">"complex is null"</span> );
<a class="jxr_linenumber" name="195" href="#195">195</a>         }
<a class="jxr_linenumber" name="196" href="#196">196</a>         <strong class="jxr_keyword">if</strong> ( toAppendTo == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="197" href="#197">197</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException( <span class="jxr_string">"toAppendTo is null"</span> );
<a class="jxr_linenumber" name="198" href="#198">198</a>         }
<a class="jxr_linenumber" name="199" href="#199">199</a>         <strong class="jxr_keyword">if</strong> ( pos == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="200" href="#200">200</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException( <span class="jxr_string">"pos is null"</span> );
<a class="jxr_linenumber" name="201" href="#201">201</a>         }
<a class="jxr_linenumber" name="202" href="#202">202</a>         formatComplex( complex, toAppendTo );
<a class="jxr_linenumber" name="203" href="#203">203</a>         <strong class="jxr_keyword">return</strong> toAppendTo;
<a class="jxr_linenumber" name="204" href="#204">204</a>     }
<a class="jxr_linenumber" name="205" href="#205">205</a> 
<a class="jxr_linenumber" name="206" href="#206">206</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="207" href="#207">207</a> <em class="jxr_javadoccomment">     * Formats a complex value and returns the resulting text.</em>
<a class="jxr_linenumber" name="208" href="#208">208</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="209" href="#209">209</a> <em class="jxr_javadoccomment">     * @param complex the complex value to format</em>
<a class="jxr_linenumber" name="210" href="#210">210</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_javadoccomment">     * @return the text representation of the {@code complex} value</em>
<a class="jxr_linenumber" name="212" href="#212">212</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="213" href="#213">213</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if {@code complex} is {@code null}</em>
<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="215" href="#215">215</a>     <strong class="jxr_keyword">public</strong> String format( Complex complex ) {
<a class="jxr_linenumber" name="216" href="#216">216</a>         <strong class="jxr_keyword">if</strong> ( complex == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="217" href="#217">217</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( <span class="jxr_string">"complex is null"</span> );
<a class="jxr_linenumber" name="218" href="#218">218</a>         }
<a class="jxr_linenumber" name="219" href="#219">219</a>         <strong class="jxr_keyword">return</strong> complexToString( complex );
<a class="jxr_linenumber" name="220" href="#220">220</a>     }
<a class="jxr_linenumber" name="221" href="#221">221</a> 
<a class="jxr_linenumber" name="222" href="#222">222</a> 
<a class="jxr_linenumber" name="223" href="#223">223</a>     @Override
<a class="jxr_linenumber" name="224" href="#224">224</a>     <strong class="jxr_keyword">public</strong> Object parseObject( String source ) <strong class="jxr_keyword">throws</strong> ParseException {
<a class="jxr_linenumber" name="225" href="#225">225</a>         <strong class="jxr_keyword">return</strong> parse( source );
<a class="jxr_linenumber" name="226" href="#226">226</a>     }
<a class="jxr_linenumber" name="227" href="#227">227</a> 
<a class="jxr_linenumber" name="228" href="#228">228</a>     @Override
<a class="jxr_linenumber" name="229" href="#229">229</a>     <strong class="jxr_keyword">public</strong> Object parseObject( String source, ParsePosition pos ) {
<a class="jxr_linenumber" name="230" href="#230">230</a>         <strong class="jxr_keyword">return</strong> parse( source, pos );
<a class="jxr_linenumber" name="231" href="#231">231</a>     }
<a class="jxr_linenumber" name="232" href="#232">232</a> 
<a class="jxr_linenumber" name="233" href="#233">233</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment">     * Parses the text from the beginning of the given string to produce a complex number. This method may not use the</em>
<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">     * entire text of the given string.</em>
<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_javadoccomment">     * @param source the string to be parsed</em>
<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="239" href="#239">239</a> <em class="jxr_javadoccomment">     * @return a {@code Complex} value parsed from the string</em>
<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="241" href="#241">241</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if {@code source} is {@code null}</em>
<a class="jxr_linenumber" name="242" href="#242">242</a> <em class="jxr_javadoccomment">     * @throws ParseException if the beginning of the specified string cannot be parsed</em>
<a class="jxr_linenumber" name="243" href="#243">243</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="244" href="#244">244</a>     <strong class="jxr_keyword">public</strong> <a href="../../../oe/math/complex/Complex.html">Complex</a> parse( String source ) <strong class="jxr_keyword">throws</strong> ParseException {
<a class="jxr_linenumber" name="245" href="#245">245</a>         ParsePosition pos = <strong class="jxr_keyword">new</strong> ParsePosition( 0 );
<a class="jxr_linenumber" name="246" href="#246">246</a>         <a href="../../../oe/math/complex/Complex.html">Complex</a> result = parse( source, pos );
<a class="jxr_linenumber" name="247" href="#247">247</a>         <strong class="jxr_keyword">if</strong> ( result == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="248" href="#248">248</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> ParseException( source, pos.getErrorIndex() );
<a class="jxr_linenumber" name="249" href="#249">249</a>         }
<a class="jxr_linenumber" name="250" href="#250">250</a>         <strong class="jxr_keyword">return</strong> result;
<a class="jxr_linenumber" name="251" href="#251">251</a>     }
<a class="jxr_linenumber" name="252" href="#252">252</a> 
<a class="jxr_linenumber" name="253" href="#253">253</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment">     * Parses the text from a string to produce a complex number.</em>
<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment">     * &lt;p/&gt;</em>
<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_javadoccomment">     * The method attempts to parse the text starting at the index given by {@code pos}. If parsing succeeds, then the</em>
<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment">     * index of {@code pos} is updated to the index after the last character used (parsing does not necessarily use all</em>
<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment">     * characters up to the end of the string), and the parsed object is returned. If an error occurs, then the index of</em>
<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_javadoccomment">     * {@code pos} is not changed, the error index of {@code pos} is set to the index of the character where the error</em>
<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment">     * occurred, and {@code null} is returned.</em>
<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_javadoccomment">     * @param source the string to be parsed</em>
<a class="jxr_linenumber" name="263" href="#263">263</a> <em class="jxr_javadoccomment">     * @param pos a {@code ParsePosition} object with index and error index information</em>
<a class="jxr_linenumber" name="264" href="#264">264</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_javadoccomment">     * @return a {@code Complex} value parsed from the string, or {@code null} if the parse fails</em>
<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="267" href="#267">267</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if {@code source} is {@code null}</em>
<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_javadoccomment">     * @throws NullPointerException if {@code pos} is {@code null}</em>
<a class="jxr_linenumber" name="269" href="#269">269</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="270" href="#270">270</a>     <strong class="jxr_keyword">public</strong> <a href="../../../oe/math/complex/Complex.html">Complex</a> parse( String source, ParsePosition pos ) {
<a class="jxr_linenumber" name="271" href="#271">271</a>         <strong class="jxr_keyword">if</strong> ( source == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="272" href="#272">272</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException( <span class="jxr_string">"source is null"</span> );
<a class="jxr_linenumber" name="273" href="#273">273</a>         }
<a class="jxr_linenumber" name="274" href="#274">274</a>         <strong class="jxr_keyword">if</strong> ( pos == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="275" href="#275">275</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException( <span class="jxr_string">"pos is null"</span> );
<a class="jxr_linenumber" name="276" href="#276">276</a>         }
<a class="jxr_linenumber" name="277" href="#277">277</a>         <strong class="jxr_keyword">int</strong> index = pos.getIndex();
<a class="jxr_linenumber" name="278" href="#278">278</a>         <strong class="jxr_keyword">int</strong> errorIndex = -1;
<a class="jxr_linenumber" name="279" href="#279">279</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="280" href="#280">280</a>             skipWhitespace( source, pos );
<a class="jxr_linenumber" name="281" href="#281">281</a>             <strong class="jxr_keyword">int</strong> parsingIndex = pos.getIndex();
<a class="jxr_linenumber" name="282" href="#282">282</a>             String firstToken = tryParseToken( source, pos );
<a class="jxr_linenumber" name="283" href="#283">283</a>             <strong class="jxr_keyword">if</strong> ( IMAGINARY.equals( firstToken ) ) {
<a class="jxr_linenumber" name="284" href="#284">284</a>                 errorIndex = parsingIndex;
<a class="jxr_linenumber" name="285" href="#285">285</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="286" href="#286">286</a>             }
<a class="jxr_linenumber" name="287" href="#287">287</a> 
<a class="jxr_linenumber" name="288" href="#288">288</a>             skipWhitespace( source, pos );
<a class="jxr_linenumber" name="289" href="#289">289</a>             parsingIndex = pos.getIndex();
<a class="jxr_linenumber" name="290" href="#290">290</a>             Number firstNumber = tryParseNumber( source, pos );
<a class="jxr_linenumber" name="291" href="#291">291</a>             <strong class="jxr_keyword">if</strong> ( firstNumber == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="292" href="#292">292</a>                 errorIndex = parsingIndex;
<a class="jxr_linenumber" name="293" href="#293">293</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="294" href="#294">294</a>             }
<a class="jxr_linenumber" name="295" href="#295">295</a>             <strong class="jxr_keyword">double</strong> firstValue = firstNumber.doubleValue();
<a class="jxr_linenumber" name="296" href="#296">296</a>             <strong class="jxr_keyword">if</strong> ( MINUS.equals( firstToken ) ) {
<a class="jxr_linenumber" name="297" href="#297">297</a>                 firstValue = -firstValue;
<a class="jxr_linenumber" name="298" href="#298">298</a>             }
<a class="jxr_linenumber" name="299" href="#299">299</a>             index = pos.getIndex();
<a class="jxr_linenumber" name="300" href="#300">300</a> 
<a class="jxr_linenumber" name="301" href="#301">301</a>             <strong class="jxr_keyword">boolean</strong> whitespace = skipWhitespace( source, pos );
<a class="jxr_linenumber" name="302" href="#302">302</a>             String secondToken = tryParseToken( source, pos );
<a class="jxr_linenumber" name="303" href="#303">303</a>             <strong class="jxr_keyword">if</strong> ( IMAGINARY.equals( secondToken ) ) {
<a class="jxr_linenumber" name="304" href="#304">304</a>                 <strong class="jxr_keyword">if</strong> ( whitespace ) {
<a class="jxr_linenumber" name="305" href="#305">305</a>                     <strong class="jxr_keyword">return</strong> Complex.real( firstValue );
<a class="jxr_linenumber" name="306" href="#306">306</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="307" href="#307">307</a>                     index = pos.getIndex();
<a class="jxr_linenumber" name="308" href="#308">308</a>                     <strong class="jxr_keyword">return</strong> Complex.imaginary( firstValue );
<a class="jxr_linenumber" name="309" href="#309">309</a>                 }
<a class="jxr_linenumber" name="310" href="#310">310</a>             }
<a class="jxr_linenumber" name="311" href="#311">311</a>             <strong class="jxr_keyword">if</strong> ( secondToken == <strong class="jxr_keyword">null</strong> || parsePartial ) {
<a class="jxr_linenumber" name="312" href="#312">312</a>                 <strong class="jxr_keyword">return</strong> Complex.real( firstValue );
<a class="jxr_linenumber" name="313" href="#313">313</a>             }
<a class="jxr_linenumber" name="314" href="#314">314</a> 
<a class="jxr_linenumber" name="315" href="#315">315</a>             skipWhitespace( source, pos );
<a class="jxr_linenumber" name="316" href="#316">316</a>             Number secondNumber = tryParseNumber( source, pos );
<a class="jxr_linenumber" name="317" href="#317">317</a>             <strong class="jxr_keyword">if</strong> ( secondNumber == <strong class="jxr_keyword">null</strong> ) {
<a class="jxr_linenumber" name="318" href="#318">318</a>                 <strong class="jxr_keyword">return</strong> Complex.real( firstValue );
<a class="jxr_linenumber" name="319" href="#319">319</a>             }
<a class="jxr_linenumber" name="320" href="#320">320</a>             <strong class="jxr_keyword">double</strong> secondValue = secondNumber.doubleValue();
<a class="jxr_linenumber" name="321" href="#321">321</a>             <strong class="jxr_keyword">if</strong> ( MINUS.equals( secondToken ) ) {
<a class="jxr_linenumber" name="322" href="#322">322</a>                 secondValue = -secondValue;
<a class="jxr_linenumber" name="323" href="#323">323</a>             }
<a class="jxr_linenumber" name="324" href="#324">324</a> 
<a class="jxr_linenumber" name="325" href="#325">325</a>             whitespace = skipWhitespace( source, pos );
<a class="jxr_linenumber" name="326" href="#326">326</a>             String thirdToken = tryParseToken( source, pos );
<a class="jxr_linenumber" name="327" href="#327">327</a>             <strong class="jxr_keyword">if</strong> ( IMAGINARY.equals( thirdToken ) &amp;&amp; !whitespace ) {
<a class="jxr_linenumber" name="328" href="#328">328</a>                 index = pos.getIndex();
<a class="jxr_linenumber" name="329" href="#329">329</a>                 <strong class="jxr_keyword">return</strong> Complex.cartesian( firstValue, secondValue );
<a class="jxr_linenumber" name="330" href="#330">330</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="331" href="#331">331</a>                 <strong class="jxr_keyword">return</strong> Complex.real( firstValue );
<a class="jxr_linenumber" name="332" href="#332">332</a>             }
<a class="jxr_linenumber" name="333" href="#333">333</a>         } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="334" href="#334">334</a>             pos.setIndex( index );
<a class="jxr_linenumber" name="335" href="#335">335</a>             pos.setErrorIndex( errorIndex );
<a class="jxr_linenumber" name="336" href="#336">336</a>         }
<a class="jxr_linenumber" name="337" href="#337">337</a>     }
<a class="jxr_linenumber" name="338" href="#338">338</a> 
<a class="jxr_linenumber" name="339" href="#339">339</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> skipWhitespace( String source, ParsePosition pos ) {
<a class="jxr_linenumber" name="340" href="#340">340</a>         <strong class="jxr_keyword">boolean</strong> whitespace = false;
<a class="jxr_linenumber" name="341" href="#341">341</a>         <strong class="jxr_keyword">int</strong> index = pos.getIndex();
<a class="jxr_linenumber" name="342" href="#342">342</a>         <strong class="jxr_keyword">while</strong> ( index &lt; source.length() &amp;&amp; Character.isWhitespace( source.charAt( index ) ) ) {
<a class="jxr_linenumber" name="343" href="#343">343</a>             index++;
<a class="jxr_linenumber" name="344" href="#344">344</a>             whitespace = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="345" href="#345">345</a>         }
<a class="jxr_linenumber" name="346" href="#346">346</a>         pos.setIndex( index );
<a class="jxr_linenumber" name="347" href="#347">347</a>         <strong class="jxr_keyword">return</strong> whitespace;
<a class="jxr_linenumber" name="348" href="#348">348</a>     }
<a class="jxr_linenumber" name="349" href="#349">349</a> 
<a class="jxr_linenumber" name="350" href="#350">350</a>     <strong class="jxr_keyword">private</strong> String tryParseToken( String source, ParsePosition pos ) {
<a class="jxr_linenumber" name="351" href="#351">351</a>         <strong class="jxr_keyword">int</strong> index = pos.getIndex();
<a class="jxr_linenumber" name="352" href="#352">352</a>         <strong class="jxr_keyword">if</strong> ( index &gt;= source.length() ) {
<a class="jxr_linenumber" name="353" href="#353">353</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="354" href="#354">354</a>         }
<a class="jxr_linenumber" name="355" href="#355">355</a>         <strong class="jxr_keyword">if</strong> ( source.regionMatches( index, PLUS, 0, PLUS.length() ) ) {
<a class="jxr_linenumber" name="356" href="#356">356</a>             pos.setIndex( index + PLUS.length() );
<a class="jxr_linenumber" name="357" href="#357">357</a>             <strong class="jxr_keyword">return</strong> PLUS;
<a class="jxr_linenumber" name="358" href="#358">358</a>         }
<a class="jxr_linenumber" name="359" href="#359">359</a>         <strong class="jxr_keyword">if</strong> ( source.regionMatches( index, MINUS, 0, MINUS.length() ) ) {
<a class="jxr_linenumber" name="360" href="#360">360</a>             pos.setIndex( index + MINUS.length() );
<a class="jxr_linenumber" name="361" href="#361">361</a>             <strong class="jxr_keyword">return</strong> MINUS;
<a class="jxr_linenumber" name="362" href="#362">362</a>         }
<a class="jxr_linenumber" name="363" href="#363">363</a>         <strong class="jxr_keyword">if</strong> ( Character.isUnicodeIdentifierStart( source.charAt( index ) ) ) {
<a class="jxr_linenumber" name="364" href="#364">364</a>             <em class="jxr_comment">// token extraction does not handle supplementary characters</em>
<a class="jxr_linenumber" name="365" href="#365">365</a>             <strong class="jxr_keyword">int</strong> endIndex = index + 1;
<a class="jxr_linenumber" name="366" href="#366">366</a>             <strong class="jxr_keyword">while</strong> ( endIndex &lt; source.length() &amp;&amp; Character.isUnicodeIdentifierPart( source.charAt( endIndex ) ) ) {
<a class="jxr_linenumber" name="367" href="#367">367</a>                 endIndex++;
<a class="jxr_linenumber" name="368" href="#368">368</a>             }
<a class="jxr_linenumber" name="369" href="#369">369</a>             String token = source.substring( index, endIndex );
<a class="jxr_linenumber" name="370" href="#370">370</a>             <strong class="jxr_keyword">if</strong> ( IMAGINARY.equals( token ) ) {
<a class="jxr_linenumber" name="371" href="#371">371</a>                 pos.setIndex( index + IMAGINARY.length() );
<a class="jxr_linenumber" name="372" href="#372">372</a>                 <strong class="jxr_keyword">return</strong> IMAGINARY;
<a class="jxr_linenumber" name="373" href="#373">373</a>             }
<a class="jxr_linenumber" name="374" href="#374">374</a>         }
<a class="jxr_linenumber" name="375" href="#375">375</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="376" href="#376">376</a>     }
<a class="jxr_linenumber" name="377" href="#377">377</a> 
<a class="jxr_linenumber" name="378" href="#378">378</a>     <strong class="jxr_keyword">private</strong> Number tryParseNumber( String source, ParsePosition pos ) {
<a class="jxr_linenumber" name="379" href="#379">379</a>         <strong class="jxr_keyword">int</strong> index = pos.getIndex();
<a class="jxr_linenumber" name="380" href="#380">380</a>         <strong class="jxr_keyword">if</strong> ( index &gt;= source.length() ) {
<a class="jxr_linenumber" name="381" href="#381">381</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="382" href="#382">382</a>         }
<a class="jxr_linenumber" name="383" href="#383">383</a>         String positivePrefix = numberFormat.getPositivePrefix();
<a class="jxr_linenumber" name="384" href="#384">384</a>         <strong class="jxr_keyword">if</strong> ( !positivePrefix.isEmpty() &amp;&amp; source.regionMatches( index, positivePrefix, 0, positivePrefix.length() ) ) {
<a class="jxr_linenumber" name="385" href="#385">385</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="386" href="#386">386</a>         }
<a class="jxr_linenumber" name="387" href="#387">387</a>         String negativePrefix = numberFormat.getNegativePrefix();
<a class="jxr_linenumber" name="388" href="#388">388</a>         <strong class="jxr_keyword">if</strong> ( !negativePrefix.isEmpty() &amp;&amp; source.regionMatches( index, negativePrefix, 0, negativePrefix.length() ) ) {
<a class="jxr_linenumber" name="389" href="#389">389</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="390" href="#390">390</a>         }
<a class="jxr_linenumber" name="391" href="#391">391</a>         <strong class="jxr_keyword">return</strong> numberFormat.parse( source, pos );
<a class="jxr_linenumber" name="392" href="#392">392</a>     }
<a class="jxr_linenumber" name="393" href="#393">393</a> 
<a class="jxr_linenumber" name="394" href="#394">394</a> }
</pre>
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